$EF39/61241: Disable Timer
Jump from $EF24:
EF39: A9 01 LDA #$01
Jump from $EF8D, $F041, $F07A:
EF3B: 8D 0D DD STA $DD0D ; CIA2: Interrupt (NMI) Control Register
EF3E: 4D A1 02 EOR $02A1 ; RS232 Enables
EF41: 09 80 ORA #$80
EF43: 8D A1 02 STA $02A1 ; RS232 Enables
EF46: 8D 0D DD STA $DD0D ; CIA2: Interrupt (NMI) Control Register
EF49: 60 RTS
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